//
// Created by 123 on 2024/12/30.
//
#include "iostream"

using namespace std;

int main029(){
    //指针变量p指向内存地址编号为0的空间
    int* p = NULL;
    //内存编号0 ~255为系统占用内存，不允许用户访问
    cout << *p << endl;

    int* q = (int*)0x1100;
    cout << *q << endl;

    return 0;
}